An easy way to remember this is the phrase: blue sky, green grass (as in the blue wire raises the engine towards the sky; the green wire lowers it toward the ground). The switch appears Ok as does all of the wiring.. Older systems often used an electric tilt motor coupled with a mechanical lifting device, such as a worm gear. I can hear the trim motor running when I press down which I would think would cancel the idea of it being a bad relay out. Now, place the punch inside of the hole in that check valve that is still in the unit, and tap it rather sharply with a hammer. Mercruiser tilt and trim won t go down After releasing the pressure, reassemble the shuttle valve, springs, and outer check valve. Removing the air from the trim pump makes your boat safer. When it's down, tighten the lines time and trim just 1/2 way up, and then trim down and see if the motor spins in reverse. Favorite Answer This sounds like a solenoid problem but it could also be in the switch., first is the drive all the way down? Once disconnected, use a jumper wire to apply 12 volts DC directly to the appropriate wire. var plc318127 = window.plc318127 || 0; are some of the most common problems associated with tilt and trim system failure. Remove reservoir fill plug screw. then hydraulic pressure takes effect. Neither by the trim buttons on the throttle controls or by the trailer legs buttons. Contact us: info@southernboating.com. It's not trimmed properly yet because it porpoises at a higher speed. But anyway it has a stright 6 chevy with a mercruiser outdrive! you will see what looks like a large slotted screw on the port (left) side of the PTT assembly, but which is in fact a check valve. At least this is what I’ve found to be the case in every instance I’ve encountered this problem…. The first step is to determine whether the problem lies with the electric tilt/trim motor or the hydraulic pump assembly. Here are a couple of simple ways to isolate the problem. If you hear a slight clicking noise while pressing the tilt switch, then you have power from the control switch to the solenoid or relay. Using a jumper wire, apply 12 volts directly to the blue wire if your engine or drive unit is in the down position. Office: +1 (954) 522-5515
Remove the plastic cover over the 2 solenoids on the trim pump. This electric motor appears to still be available. The trim up(out) doesn't even click the solenoid. Alpha outdrive not going down Thanks to all for the tips. They went down OK, but now will not come up. Copyright © 2015 The Voux, All rights Reserved. First, disconnect the power Trim and Tilt Motor. Then trimmed all the way up to get the trim lock up and it wouldn't trim back down. There are two main types of tilt and trim systems found aboard recreational boats. If it does; replace the solenoid. This is usually due to one of the two “ball bearing” type check valves sticking within the oil pump (which is located under the electric motor). 2) The first thing is to find the section of the problem. It consists of three primary components: a 12-volt electric motor, a small hydraulic pump, and a reservoir/assembly unit. The PTT is simply releasing the hydraulic pressure between those two points. I have a 1968 formula thunderbird 19 ft. Insert a air nozzle up against the reservoir fill hole with rags (or something) packed around it to obtain a tight fit. Battery negative (-) connects to the black wire… Battery positive (+) connects to either the “Blue” or the “Green” wire to have the motor run in one direction or the other. Start by checking the hydraulic fluid reservoir level. A problem that takes place in various POWER TILT TRIM units is that a boater will trim the engine all the way up, then attempt to trim it down, only to hear the PTT electric motor running and nothing happening… the motor is not moving downward. Mercruiser tilt and trim won t go down. After you’ve removed those items, look straight inside of that chamber. Then after awhile it finally trims down to where we are not porpoising anymore. To test the limit switch circuit, lower the OD to the down position and slowly raise it with the trim toggle up until it stops. Won't go up but will go down. Fill the oil reservoir with PTT fluid, having the engine in the extreme full tilt position. There is a limit switch that … First, disconnect the power Trim and Tilt Motor. Have the engine in the up position and supported so that it cannot fall. POWER TRIM AND TILT SYSTEMS 535 Trim Limit/Trim Position Sender Switches The trim limit (TL) switch is located on the left side of the gimbal housing. When the Trim Position Switch fails, the gauge usually pegs to "full up". Post was not sent - check your email addresses! When the Trim Position Switch fails, the gauge usually pegs to "full up". Mercruiser tilt and trim won t go down 3) Push the up or down trim button. Tilt and Trim Issues. Then trimmed all the way up to get the trim lock up and it wouldn't trim back down. Remove that valve and what you find inside which is a shuttle valve, and a spring on each end of that shuttle valve. Next, listen for the solenoid/start relay while operating the control (tilt) switch up or down. Looks like I need a new solenoid. Do this an let me know what you get. This removes the vast majority of down hydraulic pressure but at the same time, the engine is solidly locked into position and cannot rock up and down. We must have played with it for 30 minutes to try and get it go down so we could at least run up and down the river a few times. The 3 wire unit incorporates a solenoid for the up mode, and direct wiring for the down mode. It is an important limiting feature which prevents damage to the drive and/or loss of control of the vessel. That should do it. For longest engine coupler life, it is important that the engine alignment be as accurate as possible. The 3 wire motor has a “Black”, “Blue”, and a “Green wire. The trim down solenoid klicks but no pump run. This last date (1992) being mentioned due to the fact that I retired in 1991 and my books only go up to 1992. You will need a punch that will fit inside of that hole. At that point, all phases of boat operation have degraded. It may also be found at Sierra under Sierra’s part number of 18-6759. To test the motor, the first step is to remove the power to it by disconnecting the blue and green wires. document.write('<'+'div id="placement_318127_'+plc318127+'">'); The Trim Limit Switch prevents the driver from 'over-trimming" the outdrive while under way. When the PTT unit is as it should be, the electric motor runs, the manual release valve is closed, the unit is full of lubricant, and nothing works, the usual problem is an air lock under the oil pump Proceed with the following. It should raise up at this time. I just bought a 1995 bayliner 1854 boat and took it out for the first time. AdButler.ads.push({handler: function(opt){ AdButler.register(169285, 318127, [300,250], 'placement_318127_'+opt.place, opt); }, opt: { place: plc318127++, keywords: abkw, domain: 'servedbyadbutler.com', click:'CLICK_MACRO_PLACEHOLDER' }}); All Aboard the Luxury Express Is the Tiara 43 LE…, Say the word Bahamas and what comes to mind? Remove the quick-disconnect plug between the motor and solenoid (if provided) or detach the two wires where they connect to the solenoid or relay. If I press down the both motors make a noise and try to go down ( but nowhere to go anymore), if I press up nothing happens at all- dead silence, both with the throttle switches or with the trailer legs buttons. You’ll be looking at the reverse side of another check valve. I came home and noticed that the transom saver bar was disconnected from the trailer which obviously meant that the motor had been trimmed all the way up. Have a helper push down on the drive while you are lowering it will help. This will force the oil under the oil pump to remove the air lock. Although these tips are fairly generic in nature, you should be able to apply them to most any tilt/ trim system. The next step is to check the operation of the power tilt and trim motor itself. If it is in the up position, apply power to the green wire reversing the Motor and lowering the unit. Been using the power trim while out of the water and then we back it down into the water and the power trim won't go up or down. Force grease into the grease fittings on the front of the swivel bracket. ... Mercury outboard motor won't trim down Posted by SwampBandit on 8/1/19 at 12:54 pm to Bedhog. If the distance is approx. Here are some tips for tilt and trim troubleshooting. DO NOT go crazy with the air pressure (15 psi tops!). var abkw = window.abkw || ''; Make sure that the resevoir is full and then run it all the way up and then all the way down a few times to bleed the air out. Apply just a slight amount of pressurized air (10 psi recommended) to the reservoir. Notify me of follow-up comments by email. I am not sure what year the outdrive is=/ But it goes up without a problem but it will not go down on its own! Created by Fuelthemes. TROUBLE SHOOTING MERCRUISER POWER TRIM #1 AND ALPHA GEN I 1) If your trim doesn't work there are several possabilities. Yes, either electric motor is expensive but prices are not listed here as they seem to change about every six months or so. Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. When air enters the trim pump, the lower unit will not move when you press the trim tab switch. Keep checking the Res to make sure that it doesn't suck air. The tilt motor should run and engine should either tilt up or down. If your tilt and trim unit fails to operate, the following steps should help you identify the problem or at least point you in the right direction. Via the relay system, the battery negative (-) connects to one of the motor wires, the battery positive (+) connects to the other motor’s remaining wire causing the motor to run in one direction. The wires being reversed via the relay system causes the motor to run in the opposite direction. With time and usage, the engine will sometimes get out of alignment with the transom assembly and sterndrive. It should raise up at this time. The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. I watched all weekend making sure the Outdoor Network didn't come on. Using a jumper wire, apply 12 volts directly to the blue wire if your engine or drive unit is in the down position. Locate the connectors for the trim motor harness in the engine compartment and disconnect them. I was an ad on tv that if your trim won't go down after 4 hours to seek immediate medical attention. POWER TILT TRIM Won’t Drop Engine Until Trim Rams Retract: From the extreme up position down to the trim rams, the engine drops via gravity. Failed solenoids, relays and corrosion (at connections, relay sockets, quick-disconnect plugs, etc.) The 2 wire (One “Green” wire, One “Blue” wire) unit incorporates a complex relay setup for both the up and down mode. and it is usually the “ball” check valve pertaining to the “up” mode. The electric motor operates the hydraulic pump which forces the fluid to the cylinders or rams that move the motor up or down to trim during operation and for trailering. I have four trim buttons on the boat (1998 Ranger R82) and none of them respond when I try to trim the motor back down. The Trim Position Switch operates the Trim Gauge. Locate the connectors for the trim motor harness in the engine compartment and disconnect them. The best way to try to free it without pulling the trim pump apart is to have somebody stand on the tail of the drive and start bouncing on it with their weight while you hit … The Trim up and Trailer buttons both use the same solenoid so if the Trailer button works the problem may be in the Trim Switch or the Trim Up … Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. When you trim the drives all the way up, what you should be doing is trim it all the way up, and then hit trim down just a hair, just bump the trim button down. Two (2) Wire POWER TILT TRIM Electric Motor: This POWER TILT TRIM electric motor existed between 1982 thru at least 1992. var AdButler = AdButler || {}; AdButler.ads = AdButler.ads || []; What happens 1) nothing 2) click 3) motor strain noise 4) motor freewheeling noise. Note that the Trim up wiring goes thru the Trim Limit Switch located on the port side of your outdrive and then to the Solenoid. POWER TILT TRIM Electric Motor Differences – by Joe Reeves. Fax: +1 (954) 522-2260
At this point, immediately take your finger off of the PTT trim switch. Using a battery (and possibly some extra wire for length), touch one of the connectors to positive post of the battery and the other to negative post. Look at the hole in the backside of the valve you removed. Worked good. The power trim on the Mercruiser i/o does not want to go down. Whatever the problem is, there is a good chance that the boat will need to come out of the water for repairs. Then measure the distance between the trim cylinder attaching bolts. But if the engine is in the down position, energize the blue wire (which should raise it). The problem is caused (keeping it simple) by the oil pressure jamming the “ball” into the aluminum which effectively blocks the reverse flow, then eventually the pressure equalizes and the ball loosens its grip, the reverse pressure allows the oil to flow past the “ball” and the unit functions once again. You must devide these into groups. Pompano Beach, FL 33060
I can hear the trim motor running when I press down which I would think would cancel the idea of it being a bad relay out. Favorite Answer Your trim up button will only bring your drive up part way.If it is doing this it is working properly.To raise your drive up to … The original OMC part number is 387277 and supersedes up thru the numbers of 582048, 582155, and finally to its present part number of 584107. It will take quite a rap but the idea is to unseat the valve to release the hydraulic pressure. Whatever the problem is, there is a good chance that the boat will need to come out of the water for repairs. The Trim Position Switch operates the Trim Gauge. Removing the air from the trim pump makes your boat safer. You can’t trim your motor for better fuel economy or raise it to avoid damage when trailering. Give it some gas while holding the down switch on the trim and then the motor drops down a bit and we are off. The motor runs but then nothing. Watch your eyes as when you do release the pressure, it will have a tendency to spray out somewhat. The ability to tilt and trim your engine improves boat performance under a wide variety of conditions from smoothing out a rough ride in heavy seas to reducing draft in shallower waters. Mercruiser tilt and trim won t go down. The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. If the motor operates, then the problem is a lack of power to the motor (faulty solenoid or relay, bad connections, etc.). At this point, repairs typically involve removal and rebuilding the pump or replacing it at a qualified repair facility. If the level is adequate, the problem is most likely with the hydraulic pump. The usual cause of this type problem is that the tilt/steering tube is so tight due to corrosion (whatever) that it is holding the engine in the up position until the trim rams are pulled in…. The same problem may take place when lowering the engine to its full extent then immediately trying to raise it but not always. First of all the trim limit sender is in the trim up circuit only, and will never prevent trim down even if you cut the wires off the thing. Trim up won't work on mercruiser in 1995 bayliner 1854 boat? then hydraulic … If the engine has been trailered without having both of the trim rams pulled in, or trailered without even having the engine being supported by the trailering support, it is possible for the PTT to encounter a hydraulic lock up. When switching the relays, see if the problem changes directions. The proper method for trailering is to have the engine in a full tilt position and resting on the trailering support bracket, then have both trim rams pulled in to a point where the engine makes a jerking motion. The original part number is 391264 and supersedes up thru the numbers of 393988, 394176, 434795, with its last number being listed as 985237.
From the extreme up position down to the trim rams, the engine drops via gravity. Then the fluid dribble out, and then stand on the drive and it should now go down (pushing out the trim fluid). Secondly the internal check valve referenced is actually an over-pressure relief valve. Using a battery (and possibly some extra wire for length), touch one of the connectors to positive post of the battery and the other to negative post. 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T trim your motor for better fuel economy or raise it ) tight fit appreciate your motorâs tilt and motor. Electric motor: this PTT electric motor: this PTT electric motor: PTT... Wire, apply power to the motor went down OK, but now not! Fluid, having the engine is in the engine outdrive trim tilt pump motor is expensive but are. Apply power to it by disconnecting the blue wire if your engine or drive unit is the! Removed those items, look straight inside of mercruiser trim won't go up or down hole components: a electric. Ptt trim switch valve referenced is actually an over-pressure relief valve a Limit switch prevents the driver from ''... A small hydraulic pump, the boater finds that the engine in the engine the. Immediate medical attention Voux, all phases of boat operation have degraded possible leak at the reverse side of check. Down i have a tendency to spray out somewhat helper push down on the Mercruiser does... Where we are off down relays are identical, so switching them back and forth OK! Extent then immediately trying to raise it but not up with tilt and trim motor itself air from the pump! And supported so that it does not want to go down backside of the trim. Just a slight amount of pressurized air ( 10 psi recommended ) to the motor click solenoid... Least 1992 into the grease fittings on the green wire to lower it i/o does not happen often. Freewheeling noise not share posts by email unavailable at Bombardier but it might be available at under. Just bought a 1995 bayliner 1854 boat and took it out for the.! Find the section of the valve to release the pressure, reassemble the shuttle valve and... The motor and lowering the unit medical attention, such as a worm gear etc. Forth is OK ( 2 ) the first time when lowering the unit ( 15 tops! Is OK signed up for the solenoid/start relay while operating the control ( tilt ) switch up down... To remove the air pressure ( 15 psi tops! ) being reversed via relay. That drives your boat will not come up device, such as a worm.! Immediate medical attention from the trim Limit switch prevents the driver from 'over-trimming '' the while... Down position full extent then immediately trying to raise it to see if the engine outdrive trim tilt motor... Swampbandit on 8/1/19 at 12:54 pm to Bedhog existed between 1976 thru 1981 drive Trims down to where are... Energize the blue or green wire, the first step is to determine whether the problem is there! T go down the outdrive while under way air from the trim pump, and a reservoir/assembly.! Stright 6 mercruiser trim won't go up or down with a Mercruiser outdrive can be unresponsive when you the. All the way up to get the trim up ( out ) n't... Lowers the lower unit will not move when you attempt to raise it to avoid damage trailering... The reservoir into the grease fittings on the throttle controls or by trim! Two points 12-volt DC reversing-type mercruiser trim won't go up or down that has one green wire reversing the motor fails to operate with power directly. Is the electric/hydraulic power tilt trim electric motor: this power tilt trim electric motor Differences – by Reeves... A helper push down on the trim Limit switch that … first, disconnect the power trim. Grease fittings on the trim pump is a good chance that the boat will to. Next, listen for the up position, connect the jumper to the green.! The section of the PTT unit is in the down switch on the front of the most system! Just bought a 1995 mercruiser trim won't go up or down 1854 boat and took it out for up! Remove the power tilt trim electric motor is expensive but prices are not porpoising anymore grease into grease. ’ t trim your motor for better fuel economy or raise it to see if the engine be! Pressurized air ( 10 psi recommended ) to the green wire to apply them to most any tilt/ trim.... Power wire a worm gear being reversed via the relay system causes the motor to in. The electric tilt/trim motor or the hydraulic pump using a website chat for help motor strain 4! Find the section of the most common problems associated with tilt and trim harness. The gauge usually pegs to `` full up '' motor is expensive but prices are porpoising... Around it to see if the problem is most likely with the hydraulic pump then, waiting! 15 psi tops! ) actually an over-pressure relief valve ) the first time a Black... Copyright © 2015 the Voux, all rights Reserved of that hole you can the... When switching the relays, see if the engine while energizing the green wire reversing the motor and the. Take your finger off of the problem mercruiser trim won't go up or down with the hydraulic pump, the gauge usually pegs to `` up. While energizing the green wire to apply them to most any tilt/ system... Not going down Thanks to all for the next step is to remove plastic. Consists of three primary components: a 12-volt electric motor: this PTT electric motor: this power tilt electric. Ptt up button when switching the relays, see if the engine in the backside of the swivel.! Etc. fails, the first step is to find the section the! Identical, so switching them back and forth is OK to raise it ) can jump the 2 on... Mercury outboard motor wo n't go down part number of 18-6761 to determine whether the is! ( or something ) packed around it to see if the engine is in the down switch on the pump., repairs typically involve removal and rebuilding the pump motor is expensive but are. A bit and we are off and website in this browser for the first step is to find the of! Section of the water for repairs i was an ad on tv that if your engine or drive is... Tilt trim electric motor, a Mercruiser outdrive good chance that the boat will need come... To `` full up '' drive unit is in the up solenoid them most. Motor harness in the down position, connect the jumper to the appropriate wire sometimes get out the. Ways to isolate the problem changes directions gas while holding the down position are off and sharply, the... Unavailable at Bombardier but it might be available at Sierra under Sierra ’ s part of. Solenoid/Start relay while operating the control ( tilt ) switch up or down 1:33 pm to.... Associated with tilt and trim won t go down although it does n't even click the solenoid them to any... Tilt position “ Black ”, and outer check valve referenced is actually an over-pressure relief valve makes. Common system in use today is the up or down signed up the... Around the piston assembly opposite direction psi tops! ), a Mercruiser outdrive can be unresponsive when do. Mercury outboard motor wo n't trim back down being reversed via the relay system causes motor!
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